/* CSS 注释 */
h1 {
  text-align: center;
  font-weight:500;
  font-size: 3em;
  font-family: '黑体';
  /* letter-spacing: -10px; */
  /* text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 40px #ff00de, 0 0 70px #ff00de; */
  /* background: linear-gradient(#648880, #293f50); */


}
li {
  color: red;
}
/* 文字相关属性 */
body {
  font-family: "SF Pro SC","SF Pro Text","SF Pro Icons","PingFang SC","Helvetica Neue","Helvetica","Arial",sans-serif;
  font-size: 1em;
  line-height: 1.5;
  /* background-image: url('https://cn.bing.com/th?id=OHR.VeniceBeach_ZH-CN9971532384_1920x1080.jpg&rf=LaDigue_1920x1080.jpg'); */
}
p {
  text-indent: 2em;
}
#box {
  text-align: center;
  border: 1px solid red ;
}
.box-model {
  border: 10px solid red ;
  height: 100px;
  width: 100px;
  /* margin-top: 10em;
  margin-left: 10em; */
  margin: 10em;
  padding: 1em;

}
